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    SubjectRe: [PATCH 4/5] SCSI: add cpu cache flushes after kmapping and modifying a page
    On Sun, Jun 04, 2006 at 12:41:20PM +0900, Tejun Heo wrote:
    > local_irq_save(flags);
    > buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
    > memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
    > + flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
    > kunmap_atomic(buf - sg->offset, KM_IRQ0);
    > local_irq_restore(flags);

    all these should switch to scsi_kmap_atomic_sg which should do the
    flush_kernel_dcache_page call for you.

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